Saturday, September18, 2021
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Marine Weather and Tides
Plymouth, MI

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:16AMSunset 7:39PM Saturday September 18, 2021 10:33 AM EDT (14:33 UTC) Moonrise 6:03PMMoonset 3:22AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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LCZ423 /o.exp.kdtx.ma.w.0084.000000t0000z-210915t0115z/ 910 Pm Edt Tue Sep 14 2021
.the special marine warning will expire at 915 pm edt... The affected areas were... Detroit river... Michigan waters of lake erie... The Thunderstorms have weakened and no longer pose a significant threat to boaters. A severe Thunderstorm watch remains in effect until 1100 pm edt for southeastern michigan...the adjacent waters of lake erie...and the adjacent waters of lake st. Clair. Lat...lon 4173 8350 4180 8350 4195 8337 4197 8328 4225 8318 4233 8312 4236 8304 4237 8292 4236 8293 4234 8296 4232 8306 4224 8313 4212 8312 4203 8315 4196 8311 4172 8341 time...mot...loc 0110z 269deg 30kt 4235 8277 4201 8296 4172 8352
LCZ423 Expires:202109150120;;632078 FZUS73 KDTX 150110 MWSDTX Marine Weather Statement National Weather Service Detroit/Pontiac MI 910 PM EDT Tue Sep 14 2021 LCZ423-LEZ444-150120-


7 Day Forecast for Marine Location Near Plymouth, MI
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location: 42.37, -83.49     debug


Area Discussion for - Detroit/Pontiac, MI
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FXUS63 KDTX 181152 AFDDTX

Area Forecast Discussion National Weather Service Detroit/Pontiac MI 752 AM EDT Sat Sep 18 2021

AVIATION.

A deep mid to upper tropospheric anticyclone will steadily track from southwest Wisconsin this morning to central Lake Huron by 12Z Sunday. Strongly anticyclonic flow trajectories will support downglide and dry air advection across the terminals today. The most focused of low level subsidence will steadily push down to the Ohio border sometime by 15-17Z. The dry air is expected to be stout enough to then limit much in the way of diurnal cloud growth.

DTW THRESHOLD PROBABILITIES.

* None.

PREV DISCUSSION. Issued at 300 AM EDT Sat Sep 18 2021

DISCUSSION .

Uneventful frontal passage thus far tonight with only small isolated light showers having managed to briefly develop before fizzling out. No change in this trend is expected through early morning as upper level support continues pushing further away into northern Canada. The cold front clears the region by roughly 12Z this morning ending any further shower potential. High pressure follows the front settling over the region by midday. Drier air and subsidence through the mid-levels clear out lingering post-frontal cloud cover over the southern portions of the CWA by this afternoon. Clear skies across the region help to counteract the cooler airmass keeping high temps right around normal for this time of year in the mid 70s for the majority of SE MI. The exception will be the Thumb as north- northeast winds off Lake Huron keep highs in the low 70s with high 60s right along the lakeshore.

Upper level ridging over the Plains quickly advances into the Great Lakes Sunday pushing thermal troughing toward eastern Canada as the center of the surface high pressure drifts into southern Ontario. The combination of surface high pressure and the upper ridge axis shifting to our east sets up southwesterly return flow in the mid- levels advecting warmer air over the central Midwest into lower MI. 850mb temps climb over the course of Sunday reaching 14-15C late in the day allowing highs to return to near 80. Warmer airmass remains in place Monday conditionally allowing highs to reach into the low 80s even with increasing cloud cover. The condition is dependent on how quickly shower activity from the remnants of Nicholas over the Ohio/Mississippi valleys reaches SE MI. Models have been quite variable on this timing the past couple days flipping between activity holding off until late Monday evening/early night to rain starting by late afternoon. 00Z runs tonight have continued this trend with the NAM and GFS being more progressive in rain reaching the southern portions of the CWA by the afternoon whereas the Canadian and ECMWF are a bit more delayed with precip holding off until 21-00Z. Regardless over when the initial moisture plume reaches the area, the main Nicholas moisture looks to be absorbed into the deepening upper trough over the Midwest Monday night. The surge of tropical (or near tropical) moisture invigorates rain activity along the attendant surface cold front as the front reaches lower MI early Tuesday leading to widespread shower coverage by Tuesday afternoon over southeastern MI. Similar to the timing of the initial precip Monday, there are 2 camps for the how quickly the front translates across the state with the NAM/GFS again being more progressive-clearing the front by Wednesday morning whereas the Canadian/ECMWF bring slower-clearing the front by late Wednesday. This speed with have a large effect on what the storm total QPF will be for the area. Uncertainty should begin to decrease over the next couple days as we get closer to the event.

MARINE .

Post frontal northerly winds will gust around 20 knots at times this morning across southern Lake Huron. This will generate wave heights hazardous to small craft. Winds and waves will decrease during the course of the afternoon as they veer toward the northeast. This will be the result of strong high pressure expanding across the northern Great Lakes. There will be a continued veering of the winds toward the south-southeast on Sunday as the high pressure system slowly exits to the east of the region.

DTX WATCHES/WARNINGS/ADVISORIES. MI . Beach Hazards Statement until 4 PM EDT this afternoon for MIZ049.

Lake Huron . Small Craft Advisory until 4 PM EDT this afternoon for LHZ441>443.

Small Craft Advisory until 10 AM EDT this morning for LHZ421.

Lake St Clair . NONE. Michigan waters of Lake Erie . NONE.

AVIATION . CB DISCUSSION . KDK MARINE . DK

You can obtain your latest National Weather Service forecasts online at www.weather.gov/detroit.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLSM4 - St. Clair Shores, MI 33 mi33 min N 13 G 16 65°F 1023.4 hPa
THLO1 - Toledo Light No. 2 OH 41 mi33 min NNE 17 G 20 68°F
45147 - Lake St Clair 43 mi33 min N 12 G 14 66°F 71°F1 ft1022.2 hPa (+1.1)
THRO1 - 9063085 - Toledo, OH 47 mi45 min NE 6 G 12 69°F 1021.6 hPa58°F
45165 48 mi43 min NE 12 G 19 69°F 73°F3 ft
TWCO1 48 mi23 min NE 15 G 21 73°F

Wind History for Toledo, OH
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Detroit, Willow Run Airport, MI10 mi40 minNNE 910.00 miMostly Cloudy68°F53°F59%1022.8 hPa
Detroit, Detroit Metropolitan Wayne County Airport, MI13 mi40 minNE 910.00 miMostly Cloudy66°F53°F63%1022.9 hPa
Ann Arbor, Ann Arbor Municipal Airport, MI17 mi40 minNE 710.00 miPartly Cloudy64°F53°F68%1022.9 hPa
Troy, Oakland/Troy Airport, MI20 mi38 minNNE 810.00 miPartly Cloudy66°F55°F67%1024 hPa
Pontiac, Oakland County International Airport, MI21 mi40 minNNE 1010.00 miA Few Clouds64°F52°F65%1022.7 hPa

Link to 5 minute data for KYIP

Wind History from YIP (wind in knots)
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Last 24hrCalm4W6W8SW9
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SW11SW9SE10S8CalmCalmCalmCalmCalmCalmCalmNW3CalmNE6NE12
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1 day agoE4E7SE4SE7
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SE8SE4SE8SE7S7SE4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoNW4NW7W7NW9NW9
G18
N6N4N5NW3NW3CalmCalmCalmN4CalmCalm--NE3CalmCalmCalmCalmNE4N3

Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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